A framework for pervasively shared situational awareness in mobile ad hoc environments

dc.contributor.advisor Rodríguez-Martínez, Manuel Maymi-Fernandez, Fernando J. College of Engineering en_US
dc.contributor.committee Dodge, Ronald C.
dc.contributor.committee Rolke, Wolfgang A.
dc.contributor.committee Seguel, Jaime
dc.contributor.department Department of Electrical and Computer Engineering en_US
dc.contributor.representative Pomales Garcia, Cristina 2019-02-12T15:30:47Z 2019-02-12T15:30:47Z 2009
dc.description.abstract This dissertation presents a novel approach to sharing situational awareness among a group of geographically dispersed mobile networked devices. We divide our efforts into two parts: getting the information to the right places, and keeping it there. We start by introducing a stochastic approach to transporting geospatial messages that shows significantly better performance than the existing deterministic approaches, particularly in adverse network topologies. Under normal conditions, our model performs better than comparable existing approaches. Under pathological conditions, however, all other approaches fail while our model remains viable. Next, we introduce a novel cooperative spatial-aware cache that can be thought of as residing in a region rather than in any given node. Each node that participates in the cache holds an expendable part of the data, so that the loss of any node or small group of nodes can be tolerated with little or no degradation of service. The results of both our analysis and simulations show that our approach works significantly better than local caching alone both in terms of hit-ratios as well as cache survivability. In fact our shared spatial caches perform one order of magnitude better than local caches in terms of cache hit ratios. en_US
dc.description.graduationYear 2009 en_US
dc.language.iso English en_US
dc.rights.holder (c) 2007 Fernando J. Maymi Fernandez en_US
dc.rights.license All rights reserved en_US
dc.subject Situational awareness en_US
dc.subject Mobile environments en_US
dc.title A framework for pervasively shared situational awareness in mobile ad hoc environments en_US
dc.type Dissertation en_US
dspace.entity.type Publication Computing and Information Sciences and Engineering en_US Ph.D. en_US
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